﻿<p>The example shows a straight column with a rectangular cross section being tessellated with a mesh. Figure 479 and Figure 480 display the rendering in a target application.</p> 
<p>The example shows a tessellation with adding the normals at each vertex to the data set. The list of vertices given by the <em>IfcCartesianPointList3D</em> and the list of normals given by the <em>IfcTriangulatedFaceSet</em>.Normals are corresponding lists, therefore the <em>IfcTriangulatedFaceSet</em>.NormalIndex is not provided and the <em>IfcTriangulatedFaceSet</em>.CoordIndex applies to both lists.</p>
<table summary="straight beam tessellated">
 <tr>
  <td>
   <img src="../../figures/examples/column_rectangle_straight_tessellated_reference-view_edges.png" alt="column_rectangle_straight_tessellated_reference-view_edges">
  </td>
  <td>
   <img src="../../figures/examples/column_rectangle_straight_tessellated_reference-view_shaded.png" alt="column_rectangle_straight_tessellated_reference-view_shaded">
  </td>
 </tr>
 <tr style="height:20px;">
  <td style=" vertical-align:bottom;">
   <p class="figure">Figure 479 &mdash; tessellated rectangular <br/>column visualized with edges visible</p>
  </td>
  <td style=" vertical-align:bottom;">
   <p class="figure">Figure 480 &mdash; tessellated rectangular <br/>column visualized without edges</p>
  </td>
 </tr>
</table>
<blockquote class="note">
NOTE&nbsp; There is no color information within the file, the displayed color has been set by the target application as a default.
</blockquote>
